#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(8<=n&&n<=10){ 
        cout<<"ertongzu";
} 
    else if(11<=n&&n<=14){
        cout<<"shaonianzu";
}
    else if(15<=n&&n<=30){
       cout<<"qingnianzu"; 
}
}
/**************************************************************
	Problem: 1670
	User: chenjiahui
	Language: C
	Result: Compile Error
****************************************************************/